What does "evil begets evil" teach?
What does "wickedness proceeds from the wicked" teach about character and actions?

Setting the Scene

1 Samuel 24:13 — “As the old proverb says, ‘From the wicked comes wickedness,’ but my hand will never be against you.”

David speaks these words while refusing to harm King Saul. He insists that his restraint proves he is not wicked, because true wickedness can only flow from a wicked heart.


Core Principle Stated

• Character is the fountain; conduct is the stream.

• Wicked deeds are not accidental; they reveal an inner nature that is already corrupt.

• By contrast, righteous actions flow from a heart that is aligned with God.


Implications for Character

• Heart precedes behavior (Proverbs 4:23).

• Moral nature determines moral output (Matthew 12:33).

• Sinful acts serve as evidence of a sinful identity until God changes the heart (Ezekiel 36:26).


Implications for Actions

• No amount of outward etiquette can mask an unregenerate heart for long (Luke 6:45).

• A person known for habitual evil confirms his or her true allegiance (1 John 3:8–10).

• Conversely, consistent righteousness testifies to God’s transforming grace (Galatians 5:22–23).


New Testament Echoes

Matthew 12:35 — “The good man brings good things out of his good treasure, and the evil man brings evil things out of his evil treasure.”

James 3:11 — “Can both fresh water and bitter water flow from the same spring?”

Luke 6:43–44 — “No good tree bears bad fruit, nor does a bad tree bear good fruit.”


Practical Takeaways

• Examine the root, not just the fruit. Lasting change begins with a regenerated heart.

• Discern people by their consistent patterns, not occasional lapses or performances.

• Reject the lie that environment alone shapes behavior; Scripture insists inner nature is decisive.

• Pursue holiness from the inside out, relying on the Spirit to produce outward righteousness (Galatians 5:16).

How does 1 Samuel 24:13 illustrate the principle of leaving vengeance to God?
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